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CVE-2026-32254

Estado: AnalizadaAlta (7.1)—

Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N/PR:L sin UI permite explotación remota desde red con privilegios (T1210). La falta de validación de IPs permite manipular configuración de red (integridad I:L) causando negación de servicio (A:H) o redirección de tráfico.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationFilter Network TrafficEncrypt Sensitive Information

Tecnologías afectadas (1)

Kube-router — Kube-router

CWE

Referencias

JSON original (NVD)

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          "id": "CVE-2026-32254",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-18T13:35:53.287054Z"
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        "source": "security-advisories@github.com",
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          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "cloudnativelabs",
          "product": "kube-router",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.8.0"
            }
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  ],
  "published": "2026-03-18T04:17:24.340",
  "references": [
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      "url": "https://github.com/cloudnativelabs/kube-router/commit/a1f0b2eea3ee0f66b9a5b5c49dcb714619ccd456",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kube-router is a turnkey solution for Kubernetes networking. Prior to version 2.8.0, Kube-router's proxy module does not validate externalIPs or loadBalancer IPs before programming them into the node's network configuration. Version 2.8.0 contains a patch for the issue. Available workarounds include enabling DenyServiceExternalIPs feature gate, deploying admission policy, restricting service creation RBAC, monitoring service changes, and applying BGP prefix filtering."
    },
    {
      "lang": "es",
      "value": "Kube-router es una solución llave en mano para redes de Kubernetes. Antes de la versión 2.8.0, el módulo proxy de Kube-router no valida las externalIPs o las IPs de loadBalancer antes de programarlas en la configuración de red del nodo. La versión 2.8.0 contiene un parche para el problema. Las soluciones alternativas disponibles incluyen habilitar la puerta de características DenyServiceExternalIPs, desplegar una política de admisión, restringir el RBAC de creación de servicios, monitorear los cambios de servicio y aplicar el filtrado de prefijos BGP."
    }
  ],
  "lastModified": "2026-06-17T10:35:26.130",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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